not all arguments converted during string formatting Python+mysql 写入数据库的的错误

>>> cur.execute("INSERT INTO foo VALUES (%s)", "bar")    # WRONG
>>> cur.execute("INSERT INTO foo VALUES (%s)", ("bar"))  # WRONG
>>> cur.execute("INSERT INTO foo VALUES (%s)", ("bar",)) # correct
>>> cur.execute("INSERT INTO foo VALUES (%s)", ["bar"])  # correct
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作者：IMrChang 
来源：CSDN 
原文：https://blog.csdn.net/chang1976272446/article/details/73498683?utm_source=copy